The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2023
Filed:
Apr. 23, 2021
Canon Medical Systems Corporation, Otawara, JP;
Xiaohui Zhan, Vernon Hills, IL (US);
Xiaochun Lai, Vernon Hills, IL (US);
Yi Qiang, Vernon Hills, IL (US);
Kevin Christopher Zimmerman, Vernon Hills, IL (US);
Zhihong Ye, Vernon Hills, IL (US);
CANON MEDICAL SYSTEMS CORPORATION, Otawara, JP;
Abstract
A method and apparatus for diagnosing and/or calibrating underperforming pixels in detectors in a small pixelated photon counting CT system utilizes a series of tests on image data acquired in-situ as part of a series of calibration scans in the CT system. Tests are performed on the acquired data to determine the existence of underperforming pixels within the detectors such that the information acquired by those pixels can be replaced by alternate data from surrounding pixels (e.g. by interpolation). The underperforming pixels are stored in 'bad' pixel tables and may be specific to a type of image (e.g., spectral or counting) and a specific protocol.